title: Comparative evaluation of push-out bond strength of ProRoot MTA, Biodentine, and MTA Plus in furcation perforation repair.
abstract: OBJECTIVE
  Few studies have comparatively evaluated the push-out bond strength of different calcium silicate-based materials (CSMs) used in furcal perforation repair. The objective of this in vitro study was to comparatively evaluate the push-out bond strength of commercially available CSMs used as furcation repair materials, in the presence of blood contamination.
  
  
  METHODS
  Furcal perforations were made in 120 molars and were divided on the basis of the repair material used (ProRoot MTA, Biodentine, and MTA Plus), blood contamination, and duration of setting time (24 h vs. 7 days). Push-out bond strength was measured and analyzed by three-way analysis of variance (ANOVA) test.
  
  
  RESULTS
  Push-out bond strength increased with time. The 24-h push-out strength of MTA was less than that of Biodentine. Blood contamination affected the push-out bond strength of MTA Plus irrespective of the setting time.
  
  
  CONCLUSIONS
  Caution should be taken while condensing restorative materials over furcation repair materials.
authors.affiliation: Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Jamia Millia Islamia, New Delhi, India.
authors.forename: Vivek
authors.initials: V
authors.lastname: Aggarwal
authors.forename: Mamta
authors.initials: M
authors.lastname: Singla
authors.forename: Sanjay
authors.initials: S
authors.lastname: Miglani
authors.forename: Sarita
authors.initials: S
authors.lastname: Kohli
keywords: Furcation perforation; Proroot MTA; push-out bond strength; repair materials